Green buildings are designed and constructed in such a way as to reduce wastage, use eco-friendly materials and have minimal ecological impacts. Furthermore, green buildings take steps to maximise natural lighting, enhance ventilation and air quality for improved occupant health and productivity.
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Energy efficiency
Green buildings are designed to use less energy, conserve water, and produce fewer emissions. To do this, they utilize various technologies such as solar panels, heat exchangers on roofs and natural ventilation – these features reduce costs while creating more comfortable living environments for building occupants – also increasing resale values by 8 percent according to research from University of Texas researchers.
Some green buildings use renewable energy sources like solar power, wind turbines and biomass for electricity production as well as heating and cooling needs. Furthermore, passive solar design strategies like strategically placing windows to make use of sunlight may also be employed to make buildings green.
Businesses across all industry sectors are turning to green construction principles in order to enhance performance and reduce risks. Energy efficient structures reduce utility bills while health-promoting environments reduce absenteeism and boost productivity, and water saving systems help businesses minimize long-term operating expenses while meeting regulatory compliance.
Water conservation
Green buildings are designed to conserve and reduce their use of this finite resource by employing systems such as rainwater harvesting, greywater reclamation and smart metering, making these technologies invaluable business assets for developers and occupants who seek to meet environmental goals while saving money at the same time.
Green buildings that employ these technologies reduce reliance on municipal sources for water supply and long-term operating costs, and create resilient urban infrastructure capable of withstanding water shortages or drought.
Rainwater harvesting is one of the most effective means of reducing water consumption, collecting rainwater for non-potable uses like toilet flushing and irrigation, which can provide up to 34% of annual building water needs in some structures. Other ways include installing low-flow fixtures like showerheads and faucet aerators as well as designing water-efficient landscaping designs and using wastewater from sinks, showers and washing machines in toilets or for irrigation.
Indoor air quality
Indoor air quality (IAQ) can make people healthier and more productive, including reducing respiratory problems, improving cognitive performance and even lifting mood. Unfortunately, most research on IAQ in green buildings has been limited to subjective evaluations rather than objective measurements of pollutant levels and exposures.
Poor indoor air quality is caused by multiple factors, including biological contaminants and chemical pollutants. Biological pollutants include microorganisms such as viruses and bacteria as well as allergens like pet dander, mold spores and pollen. Chemical pollutants include VOCs and SVOCs generated from indoor construction materials, adhesives, paints and furnishings – each contributing to decreased indoor air quality.
Improving indoor air quality involves limiting exposure to pollutants at their source, restricting their environment of growth, and eliminating them from the building. Green buildings achieve this through strategies that promote filtration and ventilation – such as using low-emission building materials – or through heat/energy recovery ventilators that constantly replace stale indoor air with fresh outdoor air.
Human health
Buildings account for a substantial proportion of greenhouse gas emissions and global energy, water and material usage. Green buildings can help mitigate this impact while simultaneously improving employee health, happiness and productivity.
Green buildings used to focus mainly on energy conservation and carbon emissions reduction; however, modern standards include much more. Certification systems like LEED (Leadership in Energy and Environmental Design) offer credits for sustainable sites, water conservation measures and indoor air quality measures.
These credits encourage natural lighting, ventilation and materials that reduce harmful chemical emissions while at the same time encouraging natural ventilation and light levels. Other newer green standards include WELL Building Standard for occupant health-focused design and Living Building Challenge for energy, water materials air nourishment fitness comfort. Although these rating systems differ from traditional building standards they will become critical elements in green buildings success – however current studies do not measure human health directly but instead rely on self-reports or comparisons between green and nongreen buildings for measurement.